An easy way to check which version (or edition) of Azure AD you have is to go to the AAD portal:
There are four editions or tiers available, these are:
- Free
- Office 365 apps
- Premium P1
- Premium P2
With a Visual Studio Professional (or Enterprise) subscription you get the free edition.
Typically, an organisation would need to choose one of the paid editions. For example, a feature such as self-service password reset (SSPR) requires Premium P1.
See more details on pricing and features here.
Below you can see an example of AAD free edition:
If there are multiple tenants (AAD domains) connected to your account, your can switch around by clicking "Switch tenant".